Fishing-tool for underreamer-lugs.



w. W. Biss;

Patentd 001.5.. 9, 1917.

attovnu FISHING TOOL FOR UNDERREAMER LUGS.

APPLICATION FILEI) FEB. 28. 1,917.

WIILLrAM W. Bess, on MARIcoraQcatiroRma.

' FISHING-Toon son UNDnaanAMna-Lnes.:

T 0 all whom t may concern: ,l

Be it known that I, WILLIAMV Bnss, a

citizen of the United States, residing at"' V liiaricopa, 1n the county o f Kern and Statel of California, have 'invented certain new and useful Improvements in Fishing-Tools for Underreamer-LugsB of which the following is a specification, reference being hadto the accompanying drawings. p y

rlhis invention relates to tools in drilling Artesian and oil-wells`v and particularly tofishingtools.Y r l. 4 i

One,v ofthe great troubles in drilling oil wells is that lugs from the under-reamer, which is 4used for enlarging the.V holev at the bottom of the well, become disconnected 0r4 brokeno-ff of the under-reamer and lodge in the hole, thus preventing the use of the drill-l ing tools. The lug, when` it falls, has a tendency to fall flat on the bottom, of the holeV because of ,its shape and this makes it still more difficult to remove. i

The general object of my'invention is to provide a fishing tool which isyparticularly adapted for fishing out these broken lugs from tlieiunder-rcamers; 7

And a further object is to so construct the tool that it will straighten up the lug which lies flat upon the bottom of the hole and then pick up the lug after it has straightened it.'

A. further object is to form an implement of this character' of a very simple construction, which may be cheaply made and which may be readily used.

The invention is illustrated in the accom-A panying drawing, in which Figure 1 is an elevation of a fishing tool,

embodying my invention;

FigQ is a sectional viewv of the tool now in use;

Fig. 3 is a fragmentary sectional view of the tool taken at right angles to the section in Fig. 2 and showing the rea-mer lug engaged by the tool and ready to be lifted; and

Fig. 4 is a section on theline l--4 of Fig. 1. l

Referring to these drawings, it will be seen that my improved tool comprises a shank 10 from which extends a plurality of transversely curved resilient sections shown as three in number and designated respectively 11, 12 and 13. The resilient member 11 is approximately semi-circular in form and has its inner face atthe extremity of the member 11 sharpened as at 14. The mem* ,garras aanmeten, I'

vSpecification'of Letters Patent. 3 -Ptmatgd @Qtpgl 191% i AppncationlaieaFebruarylzs,1917. sel-Laine, 151,536.` i

berslQ and 13 at their-extremities Adescribe Y thus leaving longitudinal openings 16 eX- .l tending from the sharpened ends of kthe members 13 and 12 nearlyto the shank 10.

they are readily yieldable. y "The 'meinber 11 is relatively unyieldable. rEhe inner'f'aces of the memberslQ and 13 at'their endsare thickened to' provide inwardly projecting These memb'ersland 13 are resilient, that j is, they are radially yieldable and relatively eter of three inches,lthe section or' member i 11 willbeapproximately four inches longer vthan the members 1'2`a1'id'13. The" purpose ',of `this "difference /in length will bev laterv stated. .The tool maybe forged or formed in any ldesired manner, and'l ldo `notkwish to limit myself to the'particular*detailsof f construction. The shank 10 is connected to the ordinary drilling tools bya pin. y v,'llhis. y

connection of the shank anddri'lling tools, however, has not been illustrated, as it is not believed to be necessary. Y

ln the practical use of this invention, if a lug breaks from the under-reamer and becomes lodged in the hole then this tool -is attached to the .drilling tools and lowered intov the well. The form of the lug which is used o-n underreamer tools and which is supposed to have broken off is illustrated in Fig. 3 and is designated A. .The shape of this lug is such that when it breaks off, it is liable to lie fiat upon the bottom of the hole bein drilled. r1`he under-reamer is used for t e purpose of enlarging the cross section of the well and as the underreamer operates, the particles cutby the under-reamer drop to the bottom of the Well and whenever oneV of the lugs is broken oif or becomes detached from the'tool, it falls to the bottom of the well or onto the top ofl the .particles which accumulate thereon.

Now when the lug is broken off, the fishing -ralityjof sections coacting with the semicircular of the section 1l striking the broken lug and tipping it so that the lug will turn into a vertical position. By constantly driving the fishing tool downward it will force the under-reamer lug up into positionso as to cause the members l2 and 13 to be forced outward, these members yielding to this end,`

and then the members l2 and 13 close upon the lug, the iianges or lugs 17 engaging with the lug A, so as to prevent the lug from dropping out. The fishing tool may then be raised, the lug` detached and the opera-V tion proceeded with in the usual manner.

Having described my invention, What I claim is 2- l. A. fishing tool of the character -described, comprising a plurality of approximately parallel sections together defining a central longitudinally extending bore, one of said sections extending beyond the 4other sections and said other sections being resili-l ent whereby they may move outward rela-.

tive to the first named section and said other sections being formed with inwardly extending fianges on the free ends.

2. A shing tool of' the character described, comprising a shank, a Ysemi-circular section attached to the shank, and a pl`usection and extending parallel thereto and together defining a semi-circle, said last named sections being shorter than the first named vsection and being resilient whereby their free ends may be moved outflange adjacent its free ends. Y

In testimony whereofl I hereunto affix myk their lower ends being beveled Aand pro@ i vided above said beveled portions with inwardly projecting flanges, the edges of said sections being spaced from each other except at their upper and lower ends.

4. A fishing tool of the character described, comprising a plurality of approximately parallel sections, together defining a central longitudinally extending bar, one of said sections extending beyond the other section, the shortest section being resilientwhereby it may move outward vrelative to the first rnamedV longer section and being Jformed with an inwardly extending detent signature in the presence of two Witnesses.

' WILLAM W. BESS. l/Vitnesses:

LEvI lVnLoH, A. W. NEWKIRK.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

